Hi Thea,
It's true! This one changes colors so much it's hard to believe it's the same plant. That's why I included a whopping 9 different pictures on the MCG page for Gold Nugget:
https://mountaincrestgardens.c...
You can use the arrows to scroll through them. If you hover your mouse over the photos you can see the month in which they were taken. Those labeled as "Outdoors" are the exact same colony in my demo plots, taken in the four different season. Same colony, I promise! We've seen everything from plain green to bright yellow to hot pink and purple on this one. As always, sunlight is a huge factor, but this cultivar also seems to respond colorfully to cold temperatures.
Hope that helps!